荣棱腹牙甲，节肢动物门-昆虫纲-鞘翅目-牙甲科。body size 1.6-2.0 mm, oval, strongly narrowed posteriorly; head dark, pronotum yellow or reddish elytra with a black triangular sutural spot on the base. Preepisternal plate contacting metaventrite in the single point or slightly but narrowly over-lapping